Test Procedure - doe-std-1167-20030023

DOE-STD-1167-2003

14.1.4 A 6-ft-diameter single-coil loop of the breathing air hose should be formed

with the loop on a horizontal surface.

14.1.5 At a distance of 3 ft from the single-coil loop, one of the sections of the

breathing air hose, which extends from the loop and which leads to the source

of compressed air, should be securely fastened to the horizontal plane

surface.

14.2

Test Procedure

14.2.1 The portion of the breathing air hose that extends from the single-coil loop,

and which is not fastened to the horizontal plane surface, should be slowly

pulled parallel to the horizontal plane surface. The hose should be held by the

attached fittings and pulled until the loop unfolds and the hose straightens

out.

14.2.2 The rate of airflow through the breathing air hose should be observed during

the time that the single-coil loop of the hose is unfolded and the hose is

straightened out. The lowest value of the rate of airflow through the hose

during the hose-straightening process should be recorded. The maximum

decrease in the rate of airflow through the hose as a percentage of the original

flow rate should be calculated and recorded.

14.2.3 The way in which the single-coil loop of air hose unfolds should be observed,

and a record should be made of any localized kinking of the hose.

14.2.4 The breathing air hose should be acceptable in regard to resistance to kinking

if, during the process of unfolding the single-coil loop of hose, the lowest rate

of flow of air through the hose is not less than 90 percent of the original rate

of airflow through the hose and if localized kinking of the hose does not

occur.

15.0

Test for Strength of Breathing Air Hose and Couplings

(Does not apply to hoses that do not incur any significant pulling during use, i.e., hoses within the envelope of the supplied-

air suit)

15.1

Test Equipment and Requirements

15.1.1 The strength of the breathing air hose and couplings of the supplied-air suit

submitted by a DOE contractor should be determined by two tests. If more

than one type of coupling is used in the suit, then a length of breathing air

hose with each type of coupling should be tested.

15.1.2 The breathing air hose and coupling should be connected to a source of

compressed air, and a calibrated airflow-measuring instrument should be

used to monitor the rate of airflow through the hose and coupling. The rate of

airflow through the breathing air hose and coupling should be adjusted to the

minimum value specified by the DOE contractor.